Genesis:Restoring CD Audio (Model 3)
Model 3 Genesis units can have much of the functionality of an original Genesis restored by connecting some pins on the GOAC that are missing connections to the cartridge port (see diagram below). Neither can connect to a Sega CD, but if you’re using a Mega SD or Mega EverDrive PRO, you can restore Sega CD audio by connecting B1 and B3 to a Mega Amp, Triple Bypass or Onboard Audio using 75ohm pull-down resistors.
Genesis 3 VA1
The VA1 can have 32X, Virtua Racing, Game Genie, and Sega Master System (without FM audio) support restored by connecting wires from the following pins on the cartridge port to the Sega 315-5960 GOAC.
|Cart Port Pin||315-5960 GOAC Pin|
|B1||Left Audio (XL)*|
|B3||Right Audio (XR)*|
- *Pin on Mega Amp or Triple Bypass board
Genesis 3 VA2
Unfortunately, the VA2’s can only have Virtua Racing and Game Genie functionality restored, resulting in no expanded functionality past the Genesis library. However, you can still restore Sega CD audio.